The mass concentrations of serum troponin T and creatine kinase-MB are elevated before creatine kinase and creatine kinase-MB activities in acute myocardial infarction.
نویسندگان
چکیده
The time-related frequency of elevated results for the mass concentrations of the MB isoenzyme of creatine kinase and of troponin T were compared with that of creatine kinase and creatine kinase-MB activity in patients with acute myocardial infarction. Patients (322; 175 with and 147 without myocardial infarction) consecutively admitted for evaluation of possible acute myocardial infarction were investigated. Reference limits for troponin T (0.1 microgram/l) and creatine kinase-MB mass concentration (5.0 micrograms/l) were exceeded frequently in patients with unstable angina pectoris (troponin T 43%, creatine kinase-MB mass concentration 24%) in contrast to patients with no acute ischaemic heart disease (both < 5%). Within 4 and between 4-8 hours after onset of chest pain, the frequency of elevated results for creatine kinase-MB mass concentration and troponin T in patients with acute myocardial infarction was considerably higher (20-30%) than for creatine kinase and creatine kinase-MB activity. Creatine kinase-MB mass concentration and troponin T both allowed earlier diagnosis of acute myocardial infarction than creatine kinase and creatine kinase-MB activity, but troponin T was not elevated before the creatine kinase-MB mass concentration.
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عنوان ژورنال:
- European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies
دوره 31 11 شماره
صفحات -
تاریخ انتشار 1993